Method of making veneer and alpha new article of veneer



U8 8, 1933. R. N. HARTzELL 1,921,184

METHOD OF MAKING VENEER AND A NEW ARTICLE OF VENER 4 /Nl/ENTO/e f5 W u BY Mg Patented Aug. 8, 1933 UNITE D? ,szrAres METHOD OF MAKING VENER AND A` NEW ARTICLE VENEER,-

Robert N. Harwell, Piqua, ohio, assigner. to

Hartzell` Industries, poration of Ohio Inc., Piqua, Ohio, a Cor- Applicaton February 25, 1931. Serial No.518;169 iofcfiaims; (o1. 1er- 309) My invention relates tov a processor making'- permanent veneer out of relatively cheap mate- Y rials and small sizematerials built up into composite work pieces from.which the veneeris cut producing the effect of. inlaid work. that can only be. otherwise secured by the most expensive hand labor and from the most expensive wcods.

It is a further object to provide a new article of manufacture for use as veneer in which the multiplepiecesofy different kinds of wood are so interlocked one with'the other as to make it possible to retain the several parts in engagement despite the expansion and contraction of `the several pieces of wood.

Referring to the drawings:

Figure 1 is a plan view of a complete sheet of veneer formed of multiple woods interlocked with one another;

Figure 2 is a section on the line 2 2 of Figure 1;

Figure 3 is a section on the line 3-3 of Figure 1;

Figure 4 is a side elevation of the tapered 4work piece as it has been cut down during the process of cutting the veneer from the end of the work piece with the result shown in Figure l;

Figure 5 is an end elevation showing the edges `of the inserts of different wood from the main body cf veneer work piece;

Figure 6 is a view of the side opposite to Figure 4 showing the location of one of the in= serts;

Figure 7 is a top plan view of the multiple work piece.

The veneer in question is cut from the work piece in accordance with the machine and process of my application Serial No. 511,238, led `January 26, 1931, although I do not desire to conne my present invention to any particular machine, as different types of veneer can be cut from the present work piece of my invention with different machines according to the nature hof the veneer produced.

the glued `surfaces another wood which yis dry,A being substantially moisture free, such `wood being designated The. part 5A is relatively dryer than the parts!1,.2 andV 3'so. it canabsorb the moisture fromV the glue. and then have about" the same relative. amount of moisture that. the other parts have. I prefer a. wood that is relaitively soft compared to the pieces 1, 2 andf3, but that isnot absolutely essential.`

This dry veneer insert absorbsV the moisture in ythe glue,` bringing about a permanent. setting of theparts in engagement with` one: another. I then soak' the entire work. piece. in l hot water bringing the temperature .thereof up. to 159 to 200 degrees Fahrenheit.A Y

I thenfcut the work. piece into 'theveneerr strips or pieces, suoliI as is shown in Figure 1,' while h0t.`

As the tapered end of the work piece is cut away into veneer, it leaves the waste end 6. The hole 7 merely indicates a place for receiving one of the holding fingers to maintain the work piece in position, and forms no part of the present invention.

It will be noted that, in the cutting of this sheet of veneer withv the interleaved pieces of different kinds of wood, a regular design is thus provided, as will be seen in Figure l.

It will also be noted from Figure 3 that the plane of juncture between the strips 5 and the pieces l, 2 and 3, as at 8, is at an angle to the top 9 and the bottom 10 of the `veneer sheet shown in Figure 1. y n

Due to this overlapping, there can be an eX- pansion and contraction between'the two types of wood without complete separation, thereby making it possible to have a very thin sheet in which the several parts are retained in engagement with one another without cracking, splitting and loss of the inserts which is not possible where the juncture surfaces 8 are vertical to the surfaces 9 and 10.

It will be understood that I desire to comprehend within my invention such modifications as may be necessary to adapt it to varying conditions and uses.

Having thus fully described my invention, what I claim as new and desire to secure by Letters Patent, is:

1. In a method of making a work piece for veneer, air drying portions of the work piece, coating the surfaces thereof with an adhesive, inserting between the adhesive surfaces a relatively drier strip of wood.

2. In a method of making a work piece for veneer, air drying portions of the Work piece, coating the surfaces thereof with an adhesive, inserting between the adhesive surfaces a relatively drier strip of Wood, and subjecting the composite strip to a temperature of Water of approximately 150 to 200 degrees Fahrenheit.

3. In a process of making a Work piece for veneer, coating an air dried strip of lumber with adhesive, applying a moisture free strip of lumber thereto, and absorbing the moisture from the adhesive by the moisture free strip.

4. In a process of making veneer, coating an air dried strip of lumber With adhesive, applying a relatively drier strip of` lumber thereto, absorbing the moisture from the adhesive by the last-named drier strip, and soaking the composite strip in hot Water until it attains a temperature of approximately 150 to 200 degrees Fahrenheit, and cutting the veneer strip therefrom While the Work piece so formed is still subject to the temperature applied to it.

5. In a process of making a Work piece for veneer, air drying a piece of Wood until the moisture content of 15 to 25 percent remains, applying to the surface thereof an adhesive, applying to the adhesive a relatively drier piece of Wood, absorbing the moisture in the adhesive by the last-named drier piece of Wood.

Y. 6. In a process of cutting veneer, air drying 7. In a process of cutting veneer, air drying a piece of Wood until the moisture content of 15 to 25 percent remains, applying to the surface thereof an adhesive, applying to the adhesive a relatively drier piece of Wood, absorbing the moisture in the adhesive by the lastnamed drier piece of Wood, soaking the Work piece thus formed in Water until it attains a temperature of approximately 150 to 200 degrees Fahrenheit, and cutting veneer strips therefrom While hot.

8.. Ina process of making veneer, air drying a piece of Wood until it has 15 to 25 percent moisture content, applying adhesive to one surface thereof, and applying a relatively soft relatively drier piece of wood to said adhesive.

9. In a process of making a work piece for veneer, air drying a piece of wood until it has 15 to 25 percent moisture content, applying adhesive to one surface thereof, applying a relatively soft relatively drier piece of wood to said adhesive, said soft strip being relatively thinner than the rst mentioned piece of air dried wood',`

10. In a process of making veneer, forming a Work piece by air drying one portion thereof until it has l5 to -25 percent moisture content, applying casein glue to the surface thereof, applying a relatively drier Soft Wood to the surface of said glue, absorbing the moisture from the glue by the last-named drier piece of Wood, soaking the composite work piece thus formed inhot Water until it attains a temperature of from, 150 to 200 degrees Fahrenheit, and cutting While.` hot into veneer strips.-

ROBERT N. HARTZELL.

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